What is the meaning of NonActionAttribute in ASP .Net MVC C#?

When we want to use a public method in the controller but don't want to treat it as an action method, we can use the NonAction attribute. Action methods are public methods in the controller that can be called using a URL. So, by default, if there is any public method in a controller, it can be called using a URL request. To restrict access to public methods in a controller, you can use the NonAction attribute.

Now let us consider that HomeController has two public methods MyMethod1 and MyMethod2.

Controller

Example

using System.Web.Mvc;
namespace DemoMvcApplication.Controllers{
   public class HomeController : Controller{
      public string MyMethod1(){
         return "<h1>My Method 1 Invoked</h1>";
      }
      public string MyMethod2(){
         return "<h1>My Method 2 Invoked</h1>";
      }
   }
}

Let us call these two methods in HomeController using the following URL.

http://localhost:59146/Home/MyMethod1

##http://localhost:59146/Home/MyMethod2<强>

using System.Web.Mvc;
namespace DemoMvcApplication.Controllers{
   public class HomeController : Controller{
      public string MyMethod1(){
         return "<h1>My Method 1 Invoked</h1>";
      }
      [NonAction]
      public string MyMethod2(){
         return "<h1>My Method 2 Invoked</h1>";
      }
   }
}

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The following is the output of making MyMethod2 non-operational.

Output

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